<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        ul{
            background-color: springgreen;
        }
        li{
            background:cyan;
            margin-bottom: 20px;
            /* transform: all 2s; */
        }
        .triangle{
            width: 0;
            height: 0;
            border-width: 8px;
            border-style: solid;
            position: absolute;
            left: 55px;
            bottom:-15px;
            border-color: black rgba(0, 0, 0, 0) rgba(0, 0, 0, 0) rgba(0, 0, 0, 0);
        }
    </style>
</head>
<body>
    <ul>
        <li>00001</li>
        <li>00002</li>
        <li>00003</li>
        <li>00004</li>
        <li>00005</li>
    </ul>
    <div style="pointer-events:none;border-radius:5px;font-size: 12px;color: red;width: 80px;height: 20px;background-color: black;position: absolute;display: none;text-align: center;">这是提示框
        <div class="triangle"></div>
    </div>
    <script src="./utils2.js"></script>
</body>
</html>

